graphics!

1 files changed, 0 insertions, 52 deletions

diff --git a/src/kernel/vga.c b/src/kernel/vga.c
deleted file mode 100644
index 6ae1588..0000000
--- a/src/kernel/vga.c
+++ /dev/null
@@ -1,52 +0,0 @@
-#include <stdbool.h>
-#include <stdint.h>
-
-#define VGA_COLUMNS 80
-#define VGA_ROWS 25
-#define VGA_START (uint16_t *)0x000b8000
-#define VGA_END (VGA_START + VGA_COLUMNS * VGA_ROWS)
-static uint16_t *cursor = VGA_START;
-static uint16_t mask;
-
-void vga_set_color(uint8_t new_color) {
-  mask = new_color << 8;
-}
-
-void vga_swap_color(uint16_t pos) {
-  uint8_t *color_byte = (uint8_t *)(VGA_START + (pos >> 8) * VGA_COLUMNS + (pos & 0xff)) + 1;
-  *color_byte = (*color_byte << 4) + (*color_byte >> 4);
-}
-
-static void vga_scroll() {
-  for (uint32_t *i = (uint32_t *)VGA_START; i < (uint32_t *)(VGA_END - VGA_COLUMNS); ++i)
-    *i = *(i + VGA_COLUMNS / 2);
-  uint32_t f = (mask | (uint8_t)' ') * 0x00010001;
-  for (uint32_t *i = (uint32_t *)(VGA_END - VGA_COLUMNS); i < (uint32_t *)VGA_END; ++i)
-    *i = f;
-  cursor -= VGA_COLUMNS;
-}
-
-void vga_blank() {
-  uint32_t f = (mask | (uint8_t)' ') * 0x00010001;
-  uint32_t *p = (uint32_t *)VGA_START;
-  while (p < (uint32_t *)VGA_END)
-    *p++ = f;
-  cursor = VGA_END - VGA_COLUMNS;
-}
-
-void vga_printch(char ch) {
-  if (ch == '\n')
-    cursor = ((cursor - VGA_START) / VGA_COLUMNS + 1) * VGA_COLUMNS + VGA_START;
-  else if (ch == '\b')
-    *--cursor = mask | ' ';
-  else
-    *cursor++ = mask | (uint8_t)ch;
-  if (cursor == VGA_END)
-    vga_scroll();
-}
-
-void vga_print_at(uint16_t pos, const char *sz) {
-  cursor = VGA_START + (pos >> 8) * VGA_COLUMNS + (pos & 0xff);
-  while (*sz)
-    vga_printch(*sz++);
-}
\ No newline at end of file